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Lex Christopherson 661cebe5a6 docs(11-02): complete parallel-aware planning step

Tasks completed: 2/2
- Add parallelization_aware step to plan-phase.md
- Update write_phase_prompt with frontmatter guidance

SUMMARY: .planning/phases/11-parallel-aware-planning/11-02-SUMMARY.md

2026-01-12 14:15:52 -06:00

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Project State

Project Summary

Building: Brownfield support for GSD - /gsd:map-codebase workflow that analyzes existing codebases using parallel Explore agents, producing structured .planning/codebase/ documents.

Core requirements:

/gsd:map-codebase produces useful codebase documents from any codebase
Documents are focused (<100 lines each) and easy to update incrementally
/gsd:new-project detects existing code and offers mapping
/gsd:plan-phase loads relevant codebase context automatically
Codebase map updates after plan execution

Constraints:

Explore agents required for initial mapping
Each codebase map file must stay under ~100 lines
Only load relevant codebase sections into phase planning
Follow existing GSD command/workflow/template patterns

Current Position

Phase: 11 of 11 (Parallel-Aware Planning) Plan: 2 of 4 in current phase Status: In progress Last activity: 2026-01-12 - Completed 11-02-PLAN.md

Progress: █████████████░ 91% (21 of 23 plans)

Performance Metrics

Velocity:

Total plans completed: 21
Average duration: 3.8 min
Total execution time: 79 min

By Phase:

Phase	Plans	Total	Avg/Plan
1	3	9 min	3 min
2	2	5 min	2.5 min
3	1	2 min	2 min
4	2	7 min	3.5 min
5	2	5 min	2.5 min
6	2	4 min	2 min
7	1	4 min	4 min
8	1	1 min	1 min
9	1	3 min	3 min
10	4	33 min	8.3 min
11	2	6 min	3 min

Recent Trend:

Last 5 plans: 10-03 (4m), 10-04 (3m), 11-01 (4m), 11-02 (2m)
Trend: Workflow updates fast (11-02: 2m)

Updated after each plan completion

Accumulated Context

Decisions Made

Phase	Decision	Rationale
0	Folder with focused files	Easier to update incrementally than monolithic file
0	Update after plan execution	Fits existing STATE.md update pattern
0	Parallel Explore agents	Thoroughness for initial mapping
0	Selective context loading	Avoid loading irrelevant sections
6	Frontmatter with dependency graph	Enable automatic context assembly via transitive closure
6	Intelligent summary selection	Scan frontmatter, build graph, auto-select relevant phases
8	Active milestone details in ROADMAP.md	Single source of truth during development, archive only on completion
9	Phase-scoped UAT issues	Keep UAT findings tied to specific plan, not global ISSUES.md
10	git mv preserves history	Rename workflow while keeping git history intact
10	execute-plan = single, execute-phase = parallel	Clear naming for single-plan vs multi-plan execution
10	Agent-history v1.2 schema	Extended for parallel tracking, dependencies, resume support
11	Frontmatter parallelization markers	parallelizable, depends_on, files_exclusive in plan template
11	Vertical slices over workflow stages	Maximize independence when parallelization enabled
11	SUMMARY references only when needed	Avoid reflexive sequential chains

Deferred Issues

None yet.

Blockers/Concerns Carried Forward

None yet.

Roadmap Evolution

Phase 4 added: Plan-phase optimizations (~37% context reduction target)
Phase 5 added: TDD instructions for appropriate test-driven development
Phase 6 added: Frontmatter and related system upgrade
Phase 7 added: Backfill existing summaries with frontmatter
Phase 8 added: Improve roadmap system
Phase 9 added: Integrate verify-work (community contribution from OracleGreyBeard)
Phase 10 added: Parallel phase execution (rename workflow, create /gsd:execute-phase with parallelization)
Phase 11 added: Parallel-aware planning (update plan-phase.md to create parallelizable plans when enabled)

Project Alignment

Last checked: Project start Status: ✓ Aligned Assessment: No work done yet - baseline alignment. Drift notes: None

Session Continuity

Last session: 2026-01-12 Stopped at: Completed 11-02-PLAN.md Resume file: None

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